Distance From Horner Field to Washington Dulles International Airport

The distance from Horner Field () to Washington Dulles International Airport (IAD) is 1787 miles or 2875 kilometers or 1552 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Great Falls ( United States ) to Dulles ( United States )?

A one-way nonstop (direct) flight between Great Falls and Dulles takes around 4 hours 6 minutes.

Estimated flight time from Horner Field, Great Falls, United States to Washington Dulles International Airport, Dulles, United States is 4 hours 6 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - IAD

Kilometers		2875 km
Statute Miles		1787 miles
Nautical Miles		1552 nm
Avg. Time of Flight		4 hours 6 minutes

Horner Field to Washington Dulles International Airport Flight Route Map - to IAD Flight Path

Location of Horner Field & Washington Dulles International Airport is given below.
Click the map to view Great Falls to Dulles nonstop flight path and travel direction.

Click to see flight route on Google Map between Great Falls, United States and Dulles, United States. .

Nonstop flight route between Great Falls, United States and Dulles, United States.

Time Difference Between the Airports • - IAD

Time difference between Great Falls (United States) and Dulles (United States) is 2 Hours.
Dulles time is 2 Hours ahead of Great Falls.

Location	Local Time
Great Falls (United States)	2026-06-23, 06:29:33 MDT
Dulles (United States)	2026-06-23, 08:29:33 EDT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Horner Field ( / ) Great Falls, United States

Destination

Washington Dulles International Airport (IAD / KIAD) Dulles, United States